(BCN) -- Pleasant Hill police are looking for a man missing since Jan. 10. Jonathon Hartigan, 39, was last seen in Pleasant Hill at around 8:10 p.m. on Jan. 10. He goes by Jon. Police returned fire after being shot at by ‘unknown suspects’: San Jose PD Hartigan is five feet seven, 130 pounds, has dirty blonde hair and is likely wearing a hat. Police said Hartigan may be in Antioch or surrounding areas, possibly near Lone Tree Way or Blue Rock Road. Anyone with information about Hartigan's whereabouts can call the police at (925) 288-4600.